| Issue |
MATEC Web Conf.
Volume 199, 2018
International Conference on Concrete Repair, Rehabilitation and Retrofitting (ICCRRR 2018)
|
|
|---|---|---|
| Article Number | 05008 | |
| Number of page(s) | 6 | |
| Section | Reinforcement Corrosion Prevention and Cathodic Protection | |
| DOI | https://doi.org/10.1051/matecconf/201819905008 | |
| Published online | 31 October 2018 | |
Impregnation Technique Provides Corrosion Protection to Grouted Post-Tensioning Tendons
1
Vector Corrosion Technologies, Winnipeg, Manitoba, Canada
2
Florida Department of Transportation, Gainesville, Florida, United States
* Corresponding author: davidw@vector-corrosion.com
Thousands of bridge structures rely on grouted post-tensioning (PT) tendons. Problems with grouting techniques and grout materials have resulted in bridges with grout voids, chloride contaminated grout and soft grout. These problems have promoted corrosion and failure of post-tension tendons, some within 6 to 17 years of service. The Florida Department of Transportation (FDOT) has spent more than $55 million (USD) repairing 11 post-tensioned bridges to date. A cost-effective corrosion mitigation technique has been developed to minimize the corrosion of PT tendons and extend the service life of bridges which have grouting issues. This paper describes the development and implementation of this technique on grouted PT bridges.
© The Authors, published by EDP Sciences, 2018
This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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